package com.lzh.java;

/**
 * @author liuzhihao
 * @create 2021-02-13 17:52
 */

/**
 *
 * 使用同步方法解决实现Runnable接口的线程安全问题
 *
 *  关于同步方法的总结：
 *  1.同步方法仍然涉及到同步监视器，只是不需要我们显示的声明
 *  2.非静态的同步方法，同步监视器是：this
 *     静态的同步方法，同步监视器是：当前类本身
 */

class Window3 implements Runnable{

    private int ticket = 100;
    Dog dog = new Dog();
    @Override
    public void run() {
        while (true) {

            show();
        }
    }
    public synchronized void show(){//同步监视器：this
        if (ticket > 0) {

            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            System.out.println(Thread.currentThread().getName() + ":买票，票号为：" + ticket);
            ticket--;
        }
    }
}

public class WindowTest3 {
    public static void main(String[] args) {

        Window3 w = new Window3();

        Thread t1 = new Thread(w);
        Thread t2 = new Thread(w);
        Thread t3 = new Thread(w);

        t1.setName("窗口1");
        t2.setName("窗口2");
        t3.setName("窗口3");

        t1.start();
        t2.start();
        t3.start();
    }
}
